package cn.code.admin.util;

/**
 * Created by yangyibo on 17/2/7.
 */
import java.security.MessageDigest;

/**
 * MD5加密工具
 *
 */
public class MD5Util {

    private static final String SALT = "yy";
   
    private static final String WECAHT_SALT="yy_aa";
    
    public static String encode(String password) {
        password = password + SALT;
        return processEncode(password);
    }
    
    /**
     * 与微信模块约定的加密模块
     * */
    public static String wechatEncode(String password){
    	password = password + WECAHT_SALT;
        return processEncode(password);
    }
    
    public static boolean wehcatValidation(String str, String token){
		boolean flag = false;
		if(wechatEncode(str).equals(token)){
			flag = true;
		}
		return flag;
	}

    public static String processEncode(String password) {
        MessageDigest md5 = null;
        try {
            md5 = MessageDigest.getInstance("MD5");
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        char[] charArray = password.toCharArray();
        byte[] byteArray = new byte[charArray.length];

        for (int i = 0; i < charArray.length; i++)
            byteArray[i] = (byte) charArray[i];
        byte[] md5Bytes = md5.digest(byteArray);
        StringBuffer hexValue = new StringBuffer();
        for (int i = 0; i < md5Bytes.length; i++) {
            int val = ((int) md5Bytes[i]) & 0xff;
            if (val < 16) {
                hexValue.append("0");
            }

            hexValue.append(Integer.toHexString(val));
        }
        return hexValue.toString();
    }

    	
    public static void main(String[] args) {
        System.out.println(MD5Util.encode("abel"));
        System.out.println(MD5Util.encode("admin"));
    }
}